Steam-plow.



No. 638,92l. Patented Dec. I2, |899. W. C. GREGG.

STEAM PLOW.

(Application filed Dec. 8, 1898.)

*WITNESSES i INVENTUFI Nrrnn WILLIAM C. GREGG, OF HONOLULU, IIAl/VAII.

STEAM-PLOW.

SPECIFICATION forming part of Letters Patent No. 638,921, dated December12, 1899. VApplication filed December 8, 1898. Serial No. 698,634. (Nomodel.)

T0 all zij/"1,0191, t may concern:

Be it known that I, VILLIAM C. GREGG, a citizen of the United States,residing at Honolulu, Island of Oahu, I-Iawaii, have invented a new anduseful Improvement in Steam- Plows, of which the following is a full,clear, and exact description, reference being made to the accompanyingdrawings, which form a part of this specification, and to the letters ofreference thereon.

My invention relates to agricultural imple ments; and it consists of areversible or double-action gang-plow adapted to be'drawn or drivenbackward and forward across the field, so constructed that it will turnand lay the furrows evenly and in the same direction.

To this end my invention consists of a strong frame mounted upon wheels,thus forming a truck adapted to being drawn by a cable or rope in eitherdirection and avoiding the necessity of turning it around at the end ofthe furrows. To this truck is adjustably affixed a number of plows,(preferably eight,) one half of which are adapted to run in onedirection and the other half of which U are adapted to run in anopposite direction, each group being located on a line diagonal to theframe and tangential to the furrows to be plowed, to the end that eachplow shall follow another, thereby laying the furrows, each in turn, inthe bed of the one first preceding it. These groups of plows arealternately raised and lowered, according to the direction in which mytruck is being drawn or propelled, so that but one group is in use atone and the same time.

It further consists in providing means for raising or lowering an entiregroup of plows simultaneously, thereby effecting a saving in time. -f

It still further consists in providing my truck with two pilot plowsorexcavators set directly in line with the wheels on one side of mytruck, which two are pointed (like the other plows) in oppositedirections. The purpose of these is to remove obstructions and to smootha path for the said Wheels.

My invention is fully illustrated in the accompanying drawings, inwhich- Figure lis a top view of myimproved gangplow; Fig. 2, a sideelevation of one of the plows detached; Fig. 3, a front view of thesame, and Fig. 4. a side elevation of the endless screw or worm-gearwhich forms a part of the means employed in raising and lowering myplows in the frame.

Similar letters refer to similar parts throughout the several views.

VA is the truck; B, the plows; C, the adjusting mechanism, and D thepilot-plows.

The truck A consists of the frame d and the wheelsb. The frame a may bemade of any desired form and of any suitable material, iron being bestadapted to the purpose. The wheels b, (preferably four in number,) uponwhich the frame is mounted, are of ordinary construction, and hence needno description herein. Io the frame a the standards of the several plowsare adjustably secured in such manner as to admit of their being raisedor lowered at will. These standards are provided with lateral cogs c,thus forming a rock, the teeth of which engage those of pinions c of theadjusting mechanism C.

The plows B are not unlike those commonly used, and hence need nodescription. They are arranged in such order that one group B',diagonallyarrau ged in the frame, are adapted to run in one directionand the other group B2, also diagonally arranged in Ythe frame, areadapted to run in an opposite direction.

The adjusting mechanism C consists of the horizontal diagonal shafts d,the pinions e, driven thereby, the gear-wheel f, mounted thereon, thevertical shaft g, and the handwheel h. The shafts g are journaled in theboxes within which they revolve. The pinions e are rigidly affixed toand revoluble with the shafts d. The gear-wheels f are securely keyed orotherwise secured to and revolve the shafts d. The vertical shafts g arej ournaled in the frame A. They are provided with spiral threads whichengage the teeth of the gear-wheels f. VThe hand-wheels 7i serve toimpart horizontal rotary motion to the vertical shafts g, the spiralthreads of which in turn impart Vertical rotary motion to the gearwheelsf,which rotate the horizontal shafts d and with them the pinions e, theteeth of which engage those of the plow-standards, thereby raising orlowering them, as desired.

The pilot-plows D are set directly in front of the land-wheels of myplow and serve, as before stated, to remove obstructions and IOO tosmooth the paths in either direction for the wheels l).

jj are sections of the cable used in drawing my plow backward andforward across the field, power being supplied to it by steam-enginessuitably located to wind and unwind the same.

It is apparent that power may be applied to the gear-wheel f instead ofusing the handwheel shown, if so desired.

In practice I run my plow across one end of a ield, plowing fourfurrows, (more when more plows are employed,) all the furrows beingturned in the same direction and cach laid in the bed of the one nextpreceding it. Then when at the end of the furrows I lower one group ofplows and raise another group through the use of the adjusting mechanismshown and in the manner above described, when the plow is drawn in anopposite direction and the reversely-arranged plows will turn four morefurrows, and thus I proceed until the land is all plowed.

Having thus described my inventio11,\vhat I claim, and desire to secureby Letters Patent, is-

l. In a steam-plow, the combination with a truck, of two gangs of plowsreversely diagonaiiy set in the frame of said truck, all of said plowsbeing vertically adjustable in the said frame, each gang being operatedby independent mechanism, to the end, that one gang may be lowered toplow in one direction and the other gang lowered to plow in an oppositedirection; means for alternately lowering and raising each of the saidgangs of plows, which means consist of hand-Wheels, endless screws orworm-gears, shafts rotated thereby, pinions mounted upon the saidshafts, the teeth of which engage the teeth of the plow-standards, allsubstantially as shown and described.

2. In a steam-plow, the combination of a truck adapted to being drawn inopposite directions, said truck consisting of asuitable frame mountedupon wheels, plows vertically adjustable in said frame, and means forlowering and raising the same, and reversely-arranged pilot-plows orexcavators affixed in the front and rear of the wheels on said truck,all substantially as shown and described.

In testimony whereof I have hereunto signed my name this 3d day ofDecember, A. D. i898.

WILLIAM C. GREGG.

Witnesses BonDU BOWMAN, EARL WELCH.

